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			51 lines
		
	
	
	
		
			777 B
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			51 lines
		
	
	
	
		
			777 B
		
	
	
	
		
			C
		
	
	
	
	
	
| /* See LICENSE.dwm file for copyright and license details. */
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| #include <stdarg.h>
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| #include <stdio.h>
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| #include <stdlib.h>
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| #include <string.h>
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| #include <fcntl.h>
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| 
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| #include "util.h"
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| 
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| void
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| die(const char *fmt, ...) {
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| 	va_list ap;
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| 
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| 	va_start(ap, fmt);
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| 	vfprintf(stderr, fmt, ap);
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| 	va_end(ap);
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| 
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| 	if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
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| 		fputc(' ', stderr);
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| 		perror(NULL);
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| 	} else {
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| 		fputc('\n', stderr);
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| 	}
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| 
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| 	exit(1);
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| }
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| 
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| void *
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| ecalloc(size_t nmemb, size_t size)
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| {
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| 	void *p;
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| 
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| 	if (!(p = calloc(nmemb, size)))
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| 		die("calloc:");
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| 	return p;
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| }
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| 
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| int
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| fd_set_nonblock(int fd) {
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| 	int flags = fcntl(fd, F_GETFL);
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| 	if (flags < 0) {
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| 		perror("fcntl(F_GETFL):");
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| 		return -1;
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| 	}
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| 	if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0) {
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| 		perror("fcntl(F_SETFL):");
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| 		return -1;
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| 	}
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| 
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| 	return 0;
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| }
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